2007 Infiniti QX56 vs. 2007 Kia Optima
To start off, both 2007 Infiniti QX56 and 2007 Kia Optima were released in the same year (2007). Therefore the support and the availability on parts for both vehicles should be relatively similar. At 5,552 cc (8 cylinders), 2007 Infiniti QX56 is equipped with a bigger engine. In terms of performance, 2007 Infiniti QX56 (320 HP @ 4900 RPM) has 158 more horse power than 2007 Kia Optima. (162 HP @ 5800 RPM). In normal driving conditions, 2007 Infiniti QX56 should accelerate faster than 2007 Kia Optima.
Because 2007 Infiniti QX56 is four wheel drive (4WD), it will have significant more traction and grip than 2007 Kia Optima. In wet, icy, snow, or gravel driving conditions, 2007 Infiniti QX56 will offer significantly more control. With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control. Let's talk about torque, 2007 Infiniti QX56 (533 Nm @ 3600 RPM) has 311 more torque (in Nm) than 2007 Kia Optima. (222 Nm @ 4260 RPM). This means 2007 Infiniti QX56 will have an easier job in driving up hills or pulling heavy equipment than 2007 Kia Optima. 2007 Infiniti QX56 has automatic transmission and 2007 Kia Optima has manual transmission. 2007 Kia Optima will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2007 Infiniti QX56 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2007 Infiniti QX56 | 2007 Kia Optima | |
| Make | Infiniti | Kia |
| Model | QX56 | Optima |
| Year Released | 2007 | 2007 |
| Body Type | SUV | Sedan |
| Engine Position | Front | Front |
| Engine Size | 5552 cc | 2399 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 320 HP | 162 HP |
| Engine RPM | 4900 RPM | 5800 RPM |
| Torque | 533 Nm | 222 Nm |
| Torque RPM | 3600 RPM | 4260 RPM |
| Fuel Type | Diesel | Gasoline |
| Drive Type | 4WD | Front |
| Transmission Type | Automatic | Manual |
| Number of Seats | 7 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Length | 5260 mm | 4740 mm |
| Vehicle Width | 2010 mm | 1810 mm |
| Vehicle Height | 1980 mm | 1490 mm |
| Wheelbase Size | 3140 mm | 2730 mm |
| Fuel Tank Capacity | 106 L | 65 L |
